Built-in battery, long battery life more than 10H battery life 1.44 inch large size dot matrix display, rich display content Full-frequency magnetic liquid speaker, small size, large volume, good sound quality Rich buttons and extremely simple operation Support SD card MP3 playback function Support radio mode: + digital radio, FM analog radio + band: Band III (170-240MHz) FM band: 97.5-108MHz with RDS Default channel: 10 channels, 10 FM channels SD card: Maximum support for 32G Built-in speaker power: 2W RMS, 4 Headphone power: stereo 8mW RMS, 32 Power: MICRO-USB charging port, Battery: Built-in 1000mAh lithium-ion battery Life time: 22h headphone mode, 10h speaker mode Charging time: 3h Product size: 105*62*20mm colour:black Material:ABS Package Contents: 1 * digital radio 1 * User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.